Nucleosynthesis during the merger of white dwarfs and the origin of R Coronae Borealis stars

Autores
Longland, Richard; Loren Aguilar, P.; Jose, J.; Garcia Berro, E.; Althaus, Leandro Gabriel; Isern, J.
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Many hydrogen-deficient stars are characterized by surface abundance patterns that are hard to reconcile with conventional stellar evolution. Instead, it has been suggested that they may represent the result of a merger episode between a helium and a carbon-oxygen white dwarf. In this Letter, we present a nucleosynthesis study of the merger of a 0.4 M ☉ helium white dwarf with a 0.8 M ☉ carbon-oxygen white dwarf, by coupling the thermodynamic history of Smoothed Particle Hydrodynamics particles with a post-processing code. The resulting chemical abundance pattern, particularly for oxygen and fluorine, is in qualitative agreement with the observed abundances in R Coronae Borealis stars.
Fil: Longland, Richard. Universidad Politecnica de Catalunya; España. Institut d’Estudis Espacials de Catalunya; España
Fil: Loren Aguilar, P.. Universidad Politecnica de Catalunya; España. Institut d’Estudis Espacials de Catalunya; España
Fil: Jose, J.. Universidad Politecnica de Catalunya; España. Institut d’Estudis Espacials de Catalunya; España
Fil: Garcia Berro, E.. Universidad Politecnica de Catalunya; España. Institut d’Estudis Espacials de Catalunya; España
Fil: Althaus, Leandro Gabriel. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina
Fil: Isern, J.. Institut de Ciencies de l’Espai; España. Institut d’Estudis Espacials de Catalunya; España
Materia
Nuclear Reactions
Nucleosynthesis
Agb Stars
White Dwarfs
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/10281
Acceder
id CONICETDig_b93b2abf497e56cd665a48f49c0c8030
oai_identifier_str oai:ri.conicet.gov.ar:11336/10281
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Nucleosynthesis during the merger of white dwarfs and the origin of R Coronae Borealis starsLongland, RichardLoren Aguilar, P.Jose, J.Garcia Berro, E.Althaus, Leandro GabrielIsern, J.Nuclear ReactionsNucleosynthesisAgb StarsWhite Dwarfshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Many hydrogen-deficient stars are characterized by surface abundance patterns that are hard to reconcile with conventional stellar evolution. Instead, it has been suggested that they may represent the result of a merger episode between a helium and a carbon-oxygen white dwarf. In this Letter, we present a nucleosynthesis study of the merger of a 0.4 M ☉ helium white dwarf with a 0.8 M ☉ carbon-oxygen white dwarf, by coupling the thermodynamic history of Smoothed Particle Hydrodynamics particles with a post-processing code. The resulting chemical abundance pattern, particularly for oxygen and fluorine, is in qualitative agreement with the observed abundances in R Coronae Borealis stars.Fil: Longland, Richard. Universidad Politecnica de Catalunya; España. Institut d’Estudis Espacials de Catalunya; EspañaFil: Loren Aguilar, P.. Universidad Politecnica de Catalunya; España. Institut d’Estudis Espacials de Catalunya; EspañaFil: Jose, J.. Universidad Politecnica de Catalunya; España. Institut d’Estudis Espacials de Catalunya; EspañaFil: Garcia Berro, E.. Universidad Politecnica de Catalunya; España. Institut d’Estudis Espacials de Catalunya; EspañaFil: Althaus, Leandro Gabriel. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; ArgentinaFil: Isern, J.. Institut de Ciencies de l’Espai; España. Institut d’Estudis Espacials de Catalunya; EspañaIop Publishing2011-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/10281Longland, Richard; Loren Aguilar, P.; Jose, J.; Garcia Berro, E.; Althaus, Leandro Gabriel; et al.; Nucleosynthesis during the merger of white dwarfs and the origin of R Coronae Borealis stars; Iop Publishing; Astrophysical Journal; 737; 8-2011; 34-370004-637Xenginfo:eu-repo/semantics/altIdentifier/doi/10.1088/2041-8205/737/2/L34info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/2041-8205/737/2/L34/metainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:14:39Zoai:ri.conicet.gov.ar:11336/10281instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:14:39.691CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Nucleosynthesis during the merger of white dwarfs and the origin of R Coronae Borealis stars
title Nucleosynthesis during the merger of white dwarfs and the origin of R Coronae Borealis stars
spellingShingle Nucleosynthesis during the merger of white dwarfs and the origin of R Coronae Borealis stars
Longland, Richard
Nuclear Reactions
Nucleosynthesis
Agb Stars
White Dwarfs
title_short Nucleosynthesis during the merger of white dwarfs and the origin of R Coronae Borealis stars
title_full Nucleosynthesis during the merger of white dwarfs and the origin of R Coronae Borealis stars
title_fullStr Nucleosynthesis during the merger of white dwarfs and the origin of R Coronae Borealis stars
title_full_unstemmed Nucleosynthesis during the merger of white dwarfs and the origin of R Coronae Borealis stars
title_sort Nucleosynthesis during the merger of white dwarfs and the origin of R Coronae Borealis stars
dc.creator.none.fl_str_mv Longland, Richard
Loren Aguilar, P.
Jose, J.
Garcia Berro, E.
Althaus, Leandro Gabriel
Isern, J.
author Longland, Richard
author_facet Longland, Richard
Loren Aguilar, P.
Jose, J.
Garcia Berro, E.
Althaus, Leandro Gabriel
Isern, J.
author_role author
author2 Loren Aguilar, P.
Jose, J.
Garcia Berro, E.
Althaus, Leandro Gabriel
Isern, J.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Nuclear Reactions
Nucleosynthesis
Agb Stars
White Dwarfs
topic Nuclear Reactions
Nucleosynthesis
Agb Stars
White Dwarfs
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Many hydrogen-deficient stars are characterized by surface abundance patterns that are hard to reconcile with conventional stellar evolution. Instead, it has been suggested that they may represent the result of a merger episode between a helium and a carbon-oxygen white dwarf. In this Letter, we present a nucleosynthesis study of the merger of a 0.4 M ☉ helium white dwarf with a 0.8 M ☉ carbon-oxygen white dwarf, by coupling the thermodynamic history of Smoothed Particle Hydrodynamics particles with a post-processing code. The resulting chemical abundance pattern, particularly for oxygen and fluorine, is in qualitative agreement with the observed abundances in R Coronae Borealis stars.
Fil: Longland, Richard. Universidad Politecnica de Catalunya; España. Institut d’Estudis Espacials de Catalunya; España
Fil: Loren Aguilar, P.. Universidad Politecnica de Catalunya; España. Institut d’Estudis Espacials de Catalunya; España
Fil: Jose, J.. Universidad Politecnica de Catalunya; España. Institut d’Estudis Espacials de Catalunya; España
Fil: Garcia Berro, E.. Universidad Politecnica de Catalunya; España. Institut d’Estudis Espacials de Catalunya; España
Fil: Althaus, Leandro Gabriel. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina
Fil: Isern, J.. Institut de Ciencies de l’Espai; España. Institut d’Estudis Espacials de Catalunya; España
description Many hydrogen-deficient stars are characterized by surface abundance patterns that are hard to reconcile with conventional stellar evolution. Instead, it has been suggested that they may represent the result of a merger episode between a helium and a carbon-oxygen white dwarf. In this Letter, we present a nucleosynthesis study of the merger of a 0.4 M ☉ helium white dwarf with a 0.8 M ☉ carbon-oxygen white dwarf, by coupling the thermodynamic history of Smoothed Particle Hydrodynamics particles with a post-processing code. The resulting chemical abundance pattern, particularly for oxygen and fluorine, is in qualitative agreement with the observed abundances in R Coronae Borealis stars.
publishDate 2011
dc.date.none.fl_str_mv 2011-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/10281
Longland, Richard; Loren Aguilar, P.; Jose, J.; Garcia Berro, E.; Althaus, Leandro Gabriel; et al.; Nucleosynthesis during the merger of white dwarfs and the origin of R Coronae Borealis stars; Iop Publishing; Astrophysical Journal; 737; 8-2011; 34-37
0004-637X
url http://hdl.handle.net/11336/10281
identifier_str_mv Longland, Richard; Loren Aguilar, P.; Jose, J.; Garcia Berro, E.; Althaus, Leandro Gabriel; et al.; Nucleosynthesis during the merger of white dwarfs and the origin of R Coronae Borealis stars; Iop Publishing; Astrophysical Journal; 737; 8-2011; 34-37
0004-637X
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1088/2041-8205/737/2/L34
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/2041-8205/737/2/L34/meta
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Iop Publishing
publisher.none.fl_str_mv Iop Publishing
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1844614076234203136
score 13.070432

Publicaciones similares